Help please

I have a 1997 Concorde lxi. The vehicle will crank and idle great, will drive about 200 feet to the stop sign but after you stop and give it gas to go, it lurches forward and cuts off. I have replaced cam sensor, throttle positioning sensor, timing belt, water pump, fuel pump, fuel filter and timing gears. If anyone could help I would appreciate it. Now it has a light studder at idle.